Lace-braiding machine



P 3, 1930. E. KRENZLER LACE BRAIDING MACHINE Filed March 28, 92

2 Sheets-Sheet dttorag.

Sept. 23, 1930'. E. KRENZLER LACE BRAIDING maxim:

Filed March 28, 192 2 Shuts-Sheet 2 122F022 for plate to thebearingsnf' q a Patented Sept. 23, 1930 ,gjjemtga a; or BARME' Gum rincnannninme MACHINE 2 3 ,Applicationifiled nerti l 2e, ie zeyse ia n6; 350,463, and in Germany Jan-nary so, c1929.

In single thread @braiding machines in i .whichthe intermittentlyjdriven driver plates aresecured againstrotation when in their po-- sition of rest in the track'plate by locking ;5, neans,- and in whichjno-spring pressure or other upwardly T directed" thrust is exerted upon the driver plates,it is known tomount these plates on their supporting columns 'withoutthe use of securing nutsorfsc'r'ews or p :10 likefastening means so that they. are free for upward'movement onthe' columns 'to permit of their ready detachmentwhen desired.

However," in that type of braiding machines in which the'driver plates are securedagainst 1 1 rotation. intheir position of rest by locking f --readilyfbe employed, because i of the upwardly directed pressure. of 'thelocl'zingmembers againstthe driverplates, wherebysaid driver 1' plateswould be lifted out ofworking position.

p a 3 It is forthis reasohtha'tin' all machines of this rcharacter hitherto constructed, the driver :plates; were provided rwith .openings for the upward passage ofthe upper ends of the colunins on zwhich the'drive'rplates were secured by nuts'screwed onto the upper ends of the columns, and 'which xwere usually countersunk inflgrooves oftheplateawhich nuts had to be rem-oved whenever. it was desired to ren1ove a driver plate. The spring pressure 1 referred to may be that, fassho'wn 1n the pres V entf instance, exerted byithe .sprlngwhlch re tractsthe movable-1 member of the clutch connects it fromits driving shaft. I

5-: This way of mounting and' removing the eplatesuis, of course, rather complicated and use-of securing nuts-,nioreover, ,cal-ls for drivfer n'ecks/of a comparatively, large diameter,

- -"cesses'ofthe driverplatescontaining-thennts, from'which the-oil made impure by the dirt .Willthn ooze through between the nut and expensive, and takes upvaluabletiine. The,

, The presentjinvention refers itoya machine of thelatter-nam'ed kind, i, e., a braidingniw chinein which the driver platesare arranged int-he track plate and rotated only when re quired, and in whichtheplates aresecured against rotation in their position of rest, i. e. a V normalposition by spring. actuated locking arms which engage in notches provided at the lower side of the driverplates orsafety- (securing) plates rigidly connected, thereto.

The'objectlof the invention is to overcomethe above-described disadvantages; in machines of this character hitherto employed by providing means which prevent the driver plate from being upwardly displaced under the pressure of the locking arms except whenthe driver plateis in a prescribed position with respect to its normalposition and also with respect to other driving plates such as to permit'ofits upward-displacement andremoval. 7

By the use of the present invention the driver plate is made readily removablethough it is ,nolonger necessary to secure the driver plates to the columns by means of nut-sor screws or other means, notwithstanding the use of (6 spring actuated Iclutch' and locking members.

According to the present invention the driver -li lates aremounted onthe' columns in such means whatsoevel'y but in order to prevent icasual displacement of the-driver plates, be-

causeof the-spring pressure of the locking arms, the driver plates are secured against upward displacement by: means of projections 8 a which connects: the" driver plate with or dis (which co-operate with the trackplate or the are under pressure of'the spring actuated locking armspp a rticularlywhen in their positio'n 'ofre'st, an except when in theprescribed ,position, referred to. ,c

As maybe seen, in thenew machine the in-.

, sertion and exchange of a" plate is veryfeasy and simple, since the plates canbe'inserted in" the machine'and again, r'emoved for example in a position'whi'ch' is displac'ed by 90 from the position of rstwith-out the necessity for "any nuts'or screws whatsoever to be 1111- screwed and again screwed up; A further v considerable advantage is ,that the necks of Y v the driver plates can be of smaller diameter than hitherto or may be provided at the upper ends with lateral apertures for the entry of the foot discs or flanges of the' bobbins.

Consequently the lower flanges of the bobbins may beof greater diameter than'hitherto and may evenbemadeofthe same diameter asthe upperebobbin flanges. It is evenpo'ssible with the "new construction to make the ,bobbin flanges correspond withthe pitch of the machine,-that is to say to makethem of the largest possible diameter; Finallythefre-.-

cesses for the reception of the nuts are omitted so'that the collectionof oil and dirt is. avoided. The plates alsoneed not be bored right through to the upper surface, and the bore off the'neckca'n'be closed on top; .The plates therefore have'an unbroken surface exv cept forthedriving notches, so that oil which has been icontaminated by dirt cannot penetratethroughto the bearings. I" *With thenew arrangement ofithe driver plates, it is advisable to relieve-the plates as I "far as possible from the pressure ofthe spring 25 for disconnectingthe couplings.'- Therefore,

. according to the invention, the pressure whichi's appliedto theco'uplingin order to disconnect it is, during the first stage of the process of disconnection, no longer taken as hitherto bythe locking members and the driver plate, but by a fixedpart of the niachine which is independent of'these'parts.

Thiscan be-efiected-by providing on the columnacollar having two oppositely situated I notches and on the-coupling sleeve two oppo sitely- 'situate'd lugs which 'co-act with this collar) Then, as'soon as it is released by the jacquard gear, the coupling is'supported with "its lugs against the collar so that the" locking meinberd-oes not yet abut againstthe driverplate or the safety plate which is connected thereto. Only when the semi-rotation of the plate is ended anddisconnection is-"completed withthe passage of the lugs through the notchesin the collar,=is pressure applied to the plate by the stop provided 01 the j "i'n'g fork of'the coupling sleeve engaging in a grQove'in-the "driver plate or in the safety plate. Then however the plate is situated-in itsposition of restiin which it is secured 1 against axial 'displacementby its proj ections engaging under thej track plate; This far-V f Qrangement; has the further advantage that the locking members, do not, as was hitherto the case, grind against one another in the first 5 stage of the process of disconnection, which caused anunnecessary wearon these parts.

Ij Fig; lis' an approximately radial section on the line: 1-1-1 of Figk2 ofa'rm'achine accord "'ingftothe first example, I. 7

xvarious constructional" embodiments of the l invention are illustrated by way of example in the accompanying draw,ings,'.inwhichv Fig: a Planthereof. f I

"of rest.

Fig. 3, a detail in horizontal section on'the line 3-3 of Fig. 1,

Fig. 4 is a radial section of a machine accordingto the second example, Fig. 5 aplanthereof, v

Fig. 6 shows a modification of the driver plate insection, this section being takenat an angle of 90 to the sectionin Fig. 1,

Fig. v'Z'is a further constructional form of the driver plate in plan,

' Fig. 8 is a section of the line 88 of Fig. 7 my and,

plate and 9a'rethe driverplates which-arean ranged in the'apertures in the track plate and are'revolubly mounted atithe upperends of rigpeisa View looking in the direction of .the-arrow9andFig7." Referring to the drawings, 8 is'the track the stationary columnslO. Below each driver plate 9 the columns 1O carry a continuously rotating driving wheel 11. The upper side of this wheel is provided with coupling clawsl? with which the [coupling claws 13 ofasleeve 15, which is displaceable on the hollow stem 14 of the driver plate 9 butisnot revolublethereon, co-act. The coupling sleeve 15-is adjusted bymeans of a fork116 which is fitted on 2. rod 18'which iscarried. vertically in'the" track plate 8 and in the base-plate 1.7. The rod 18 is moved into-its upper end position in which the driving wheel llis disconnected "driver plate against rotation in its position In contradistinction to th'elknown ma chines, the internal bores of thehollow stems" 14ofthe.driver.plates9 do not extend right inc through theplates 9 but are" closed at the top;

serted from aboveintheitrack plate 5 8 of the -machine;"and on the column 10 so thatits stem 1 engages" the'upper'. portion-of the column 10 and rests on a shoulder of the *column 10 and isithereby' supported on the col:

-' The driver'plate 91therefore' has noaper- *tures'exceptthe-twojopposite notches 22' at 1 the edge, which serve-the purpose of guiding and-taking the bobbinsyso that ithas'an otherwise unbroken, even surface) There are no nutsor releasable iastening means for the driver plates; :Thejdriverplateis simply in- 'umnj'at'therequiredheight so asto ben'orf i Y mally free for upward'and downward slid? V 'ing movement on the? columm the columnbea 'ing free from projectionsfor fastening means prohibiting such movement of; the driver plate. the undersidesfof the driver plate-V" 130 r 9' there? are provided; two oppositely situated radial projections or 'lug's 23, which engage,

under the edge of the aperture in the track 7 plate 8. The projecting parts of the lugs 23 are'so shaped and dimensioned; that the notches22 of adjacent plates allow thelugs of 'aplate which has to be inserted in or taken .tionsfdisplacedTby 901- fromitspositions of out ofthe machine at any time topass). Thus the'drver plate can'be inserted in the machine and againiremov'ed therefrom in posirest without the necessity; for releasing any fastening means whatsoever.- Asfsoon,how-, ever, as the lugs 23engage under the edges of the aperturezin the track plate S -and this ".oceursvduring the greater part ofthej rotati'on'of the driver plate andiespeciallywhen.

the diver plate isin its'position -of restthe plate 9 is secured'against upward movement by the lugs 23; The'pr'essure exerted by the disconnecting spring 19: through the stop 20 on the driver plate cannot therefore lift up the plate, If, however,ithedriver plates are turnedi'to shift a driver plate to a position atanangle of 90 displaced in its pathof" 7 rotation from its rest position, the projections 23 of this shifted plate will underlie or register with the'recesses 22 of 'adjacenti and 5,],whereupon such shifted driver plate on top" andv underneath 'movement oftheplate.

'; 'In addition means may beprovided for relie'ving the driver plate from the pressure driver platesat opposite sidesthereof, as shownby the upper drive platesin Figs. 2

may be freely removed. It is' however not necessary"thatthey should then be secured in .thismanner because the foot discs or flanges of the bobbin which simultaneously overlap thertrackplate 8 and the driver plate 9 both prevent an upward s of. the disconnecting spring during its rota,-

underthe collar aromas colunin-but'also to pass through: the notches 25xin the -collar.

' Vvhen" the coupling is disconnected-and the "driver; plate 9 is arrested inits position of rest the'lu'gs26 of the coupling. sleeve are ,situated vertically above: the notches 25 in {the Collar124. lVhen the-'icouplin'g is en-v gaged'fas usual withthe 'sijmultaneous release'of the driver plate 9,by the arm or stop '12O +the lugs 26 pass through the notches25 below the collar 24 and move below the collar during the rotation of'the driver plate. If 'yth'e sleeve 15 is releasedby the acquard'gear after a certain angular rotation of the driver" f.plate, itthen moves upwardsunder thein 165 limited however by the lugs 26 striking the collar 24,,before the stop comesinto en'- gagement with the driver plate 9. Theprersure of the disconnecting springv 19 isthus taken bythe collar on the column independentlyof the'locking member and of the driver plate: When the semi-rotation of the plateis completed the lugs 26 are underzthe notches -'of the collar24 and the sleeve 15 can move into the positionof disconnection under the influence of the spring 19, whereby the driver plate9 is secured in its positionof rest by the engagement of the arm or stop2O in one-of thelgrooves 21. As is clear, with this an I rangement theyfirst step in theprocess of disconnection relieves the driver plate from the pressure ofthe spring 19;, Pressure is only applied to the driver plateby' this spring when-the driver-plate is stationary. 2

The example illustrated in-"Figs'. an'd 5 differs from that of Figs' 1-3 in that there is carried by and arranged below the; driver plate 9 an extension of said: plate in the form nected therewith. 1 Alsofthe lugs 23 which prevent the driver plate -9 from being lifted up: areformed by ra'dialqprojections of the safety plate 27, so that no; separate lugs need be fitted toithe driver-plates itself, Otherwise the arrangement and method of operation are the same 'as-i-n the example illustrate ed in Figs. 1-3. V t V v FigsAE'fand 5 also show, a pa-rticularl'ysimple construction of the safety plate extension 27; Since the stop or arm 20,'owing,to the springpressure being taken by the collaron the column 10, does not'come intoengage- 'ment with the driver or' safetyplate in the firststage ofthe process ofdisconnection, the safety plate need nolongerqbe circular as hitherto, and it may instead be in the form of a strip extending in'the diametral direction of" the driving plate, "as may be "seen in particular from Fig; 5,, with the re ;sult that the mass to'be acceleratedi and again retarded at each rotation ofthe driver plate is'reduceclf I f The new arrangement of the j d'river plates, has the advantage, in addition to the easy insertion and removal of the plates al- -ready mentioned, that with the exception of the notches 23 for 'guidingand' taking the bobbins, thedriver plates are closed and can have an unbroken, even surface. Further the considerable advantage is also present that the lower, foot discs or flanges of the bobbin, which have hitherto had to be smaller than the upperfdisos can be increased in 10, their necks 14at least at their upper endscan be of smaller diameter than in the fluenceioffthe spring-19.": This movement lateral grooves or notches 28 into which the sofa safety plate 27*,which -is rigidly coni size. Then, owing to the omission of nuts for holding the driver plates'9 on the columns lower flanges of the bobbins project as shown in Fig. 6, As may also be seen from this figure, it is possible inthis manner toinake the lower flanges 29 of the bobbins" considerably larger than hitherto, and they may in fact be of the same size as the upper flanges.

The invention therefore enables the bobbin showan example ofthis.

discs or'flanges, and. even the lower flanges,

to ,be of a diameter which isequal or nearly equal to the pitch of the machine.

Figs. 7-9

I Inthese figures the neck 140i the driver plate is not directly fitted to the driver plate but to the safety plate 27, which-is either rigidly connected to the driver; plate or preferably, is integral-therewith and, is in the form of strip extending across the, plate in the direction of its diameter similarly-as in Figs.'5 andfi; O'r,'in otheriwords,.the neck 14: is connected with the'driver plate 9- by means of strip which is provided below the 'latter and runs in the direction'of its "diameter. The strip also contains grooves 21 for the engagement' of the arm or stop and is provided along each of its longer sides with a groove 31, the inner boundary 7 ofwhich is in the shape of a circular are, 7 in which the'lowerflanges'29- of the" bobbin engage. jThe two'grooves 31 meet at the centre line of the strip27 or cut into one an-' other so -that a passage' 32' which extends.

' right through the strip 27 is 'forined there and the strip 27 has" more or less thejfo rm of a bridge; 'As'may be seen it is nowpossible tomakethe lower flanges-29 so large that the flanges of the two bobbinslocated Jon the same plate nearly touch. The diameter of "also increased in size to theflanges 29 is then nearly equal to the distance between'thecentres of adjacent driver plates." Of courselthe up'per :iianges 30 are p correspond with the lower flanges29.

'Ihe'inventionis not limited to the constructional examples illustrated, and other :forms of construction are possible. within the spirit and-scope of-the invention as defined in the appended claims;

Claims I Z;1.- In a'single threadi lacebraiding machine, the combination of'a track plate havingopenings therei nia' column arranged below each track plate in arial' alinement with each opening therein, an intermittently rotatable driver plate operating in each "opening in the track plate and slidably and rotatably mounted on x the fcolumn inf alin'eiinent therewith, a c drive gear, means movable in; one direction or the other toJconnect the driver plate wi-ththe' drive "gear or to disconnect the driver plate fromthe idrivegear and lock said platefrom rotation, said driver i PS i plate beingfree for upward movement" on the columns and removal therefrom and from its opening .in the track plate when in 'a prescribed pesition in its p'athfofrotation displaced from its position ofrestj and means 5 operative to hold the driver plate from up I ward movement and displacement whilev 7 being rotated and in its position of rest and to release it for upward movement'and removal when in such prescribed position.

2. In a single thread lace braiding machine, the combination of a track plat-e having openings therein, a; column arranged belowthe track-plate in axial alinement with eachof-s'aid openings, an intermittently rotatable driver plate movable in eachopening en gaging thejcolumn disposed in jalinement therewith, a drive gear, means movable in one direction to couple the driver to the dr ve in the track plate andslidably' and rotatably gearJfor rotation therewith and movable in the opposite direction-to disengage. the driver- ,plate from the driver gear and lock said driver, plate from rotation in. its position of rest, the driver; plate being slidably removable from the column withoutinterfer ence when in a prescribed position in its path of rotation displaced at an angle/of from its position of rest, and locking means operative in-the rotation of the driver plate-to lock said driver plate against-upward 1novement and displacement'when rotatingand :when in its position of rest and to release it and permit of itsremovalfwhen in' such' prescribed position; I I 3.v In a single thread lace braiding ina- I chine, the combination "of at track plate-hav ing an opening therein, a column arranged beneath the track plate and. 111 axial almee ing andhaving a sleeve member depending ing the alined column, the latter terminating atits upper end in said sleeve below the topof the driver plate, a drive gear, means movable in opposite directions for coupling the driver plateto the drive gear'forirotation therewith and releasing said plate and looking it against rotationfin a position of rest,

column while rotating andinits position of rest releasingit for upward movement and F mentfwith each opening, an intermittently "rotatable driver plate movable in each open.-

therefrom and slidably and 'rotatably engag 7 and means for locking. the driver plate against v V upward movement and displacement on the,

detachment from thecolumn and track plate 1 without interference when said driver plate is ina prescribed position in its path of rota tion displaced from'its position of rest;

driver plates'movable in the openings and umns,a"drive gear, a clutch for coupling the driver. plate "to the drive gear iorirotation:

therewitha locking member for locking the driver plate against rotation, an element movable in one direction for throwing the clutch into action and releasing the locking 'memb'er, a spring for moving said element in the opposite direction to release the clutch and movethe locking member into position to lock, the driver plate against rotation in 1ts position of rest, and locking means for locking the driver plate against upward movement andremova l from the opening in the track plate when said driver plate is 1'0- tating' and in its position of rest and releas- 7 ing said driver plate and permitting of its upward movement and removal when the driver, plate is 1n a PIBSCI'lbd'POSllJlOH 1n its 7 path of rotation displaced from its position of rest. i p

5. In a singlethread lacebraidingmachine, a track plate having? intersecting openings, columns, arranged below said openings, and

in alinement therewith, intermittently rotatable driver plates movable inthe openings and each having oppositely arranged edge notches, said" driver plates being rotatably and slidably mounted on the columns, a drive gear for'ea'ch driver plate, means for Coupling each driver plate with 'its drive gear for rotation therewith or disconnecting the driver plateand locking said plate against rotation,

- andp'rojections on each driver plate normally {underlyingthe track plate to hold the driver 7 .plate'from upward movement and displacement when rotating, the arrangement of the said projections on each driver plate being, r such that when the driver plate occupies a prescribed position in its path of rotation 1 displacedtrom its position ofrest said projections will register with the notches of ad jacent driver plates whereby the driver plate embodying a track plate having openings therein, a column arranged below each opening in the track plate, an intermittently rotatable driver plate arranged in each opening in the track plate, a stem depending from the driver plate and rotatably and slidably mounted on the column, a drive gear mounted on the support, a clutch member movably mounted between the driver plate and gear for engagement with and disengagementtromthe gear, a locking element engageable with the driver plate to hold the same from rotation member with the gear and disengage the locking element from the driver plate, locking means for holding the locking element from engagement with the driver plate when the driver plate is rotating and releasing the locking element from engagement with the driver plate when said driver plate is at rest,

. and means for locking the driver plate from upward displacement on the column when in a position of rest and releasing the driver plate for upward displacement and removal from the column when shifted to a prescribed position at an angle in' its path of rotation to its position oii rest.

In testimony whereof I aflix my signature.

EMIL KRENZLER. V

is left free to be moved upwardly and de- Y tached; p 6'. In a single thread lace braiding machine, the combination of a track: plate having openv,

ings therein, a column arranged below and in axial alinement with each opening, an intermittently rotatable driver plate arranged for operation in each opening in the track plate and :mounted to slide vertically and to rotate horizontally on the column in said opening, a drive gear, means for coupling-the driver plate to the drive gear to rotate therewith and releasing it from the drive gear and locking it from rotation, and means for locking the driver plate from upwardmovement 1 on the column except when said plate is in a prescribed position in its path ofrotation,

-. the aforesaid means for'locking the driver 7 Y .plate from rotation and from upward movefmentbeing arranged entirely below the plane of the upper surface of theftrack plate and the driver plate being free for upward sliding" movement on the column without interference from said locking means when dis- .posed in such prescribed position.

7. Asingle thread lace braiding machine 

